Recommended · for beginners
#194: What is ammeter burden voltage, and why you should care.
Why people recommend it
Regularly linked to explain why a meter on its current range reads low in low voltage circuits, because of its own internal resistance.
Watch for: Explains puzzlingly low current readings
In their words
The YouTube video What is ammeter burden voltage, and why you should care. explains it - perhaps you could construct your own answer when you understand what is going on.
Andrew Morton on electronics.stackexchange.com, Mar 2018. CC BY-SA.
What is ammeter burden voltage, and why you should care (YouTube)
raddevus on electronics.stackexchange.com, Mar 2018. CC BY-SA.